Change scan downgrade timeout from 5 min to 30 min

    private static final int MSG_SCAN_TIMEOUT = 3;

    // Maximum msec before scan gets downgraded to opportunistic

    private static final int SCAN_TIMEOUT_MS = 5 * 60 * 1000;

    private static final int SCAN_TIMEOUT_MS = 30 * 60 * 1000;

    private static final String ACTION_REFRESH_BATCHED_SCAN =

            "com.android.bluetooth.gatt.REFRESH_BATCHED_SCAN";